Question about Canon EOS-5D Digital Camera

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Focus problems. I have a Canon 5D. I find that a lot of my pictures are not pin-sharp. I have adjusted the aperture setting to create less depth of field, and have also increased shutter speed to eliminate the possibility of visible had shake, but still...a lot of soft focused shots. Any suggestions?

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The canon 5d was suspected to produced low sharp pictures, but it's wrong. Sharpness is a parameter on the 5D. You can tune it in the menu/image style/ then you choose your style and hit "jump". The first cursor is sharpeness. Enjoy.

Posted on Feb 05, 2009

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Aperture function


The primary function of the aperture is to control the amount of light passing through the lens. The more light passes through the lens, the less time is required for the proper exposure. A faster exposure can freeze motion and alleviate camera motion, while a longer exposure can allow the subject to blur, conveying a sense of motion.

The aperture also affects the depth of field. A wider aperture narrows the depth of field, causing the foreground and background to blur, while a smaller aperture widens the depth of field, putting more of the scene into focus.

It's up to the photographer to decide which effects to show. Usually for a portrait you'd want the subject's face to be sharp and the background to be blurry. For a landscape, you'd generally want everything from the foreground to the background to be sharp.

May 22, 2012 | Canon PowerShot SX120 IS Digital Camera

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Controlling Depth of Field


A photographed object will only appear sharp in an area a specific distance from the camera. The human eye and brain still accept some areas of the image as acceptably sharp if they lie near the plane of focus and already show a small degree of blur. This zone, which is still in acceptably sharp focus, is called depth of field.

You'd typically want a wide depth of field when shooting landscapes, so as to have everything from the flower in the foreground to the mountains on the horizon in focus. You'd typically want a narrow depth of field for such subjects as portraits and flowers, blurring the background to avoid distractions.

How large this depth of field is depends on the distance to the subject, the aperture, and the focal length of the lens. Whether you're shooting film or digital makes no difference.

If the plane of focus lies further away from the camera, the depth of field is wider than if the camera focuses on an object close by.

Small apertures (large f/numbers) result in a wider depth of field.

Short focal length lenses (wide angle) have a wider depth of field than long focal length lenses (telephoto).

The depth of field is determined by the actual focal length of the lens, not the "35-mm equivalent" often used in the camera specifications. Because most compact cameras have sensors much smaller than SLRs, they have much shorter lenses, giving wider depth of field. This is great for landscapes, not so great for portraits.

To get a narrow depth of field, set the aperture as large as you can (smaller f/numbers), move in close to the subject, and zoom in. If your camera doesn't give you direct control over the aperture, try using the Portrait mode. And yes, the last two items above, moving in close and zooming in, are in opposition, You'll have to decide on the best balance for your picture.

To get a wide depth of field, set the aperture as small as you can (larger f/numbers), move away from the subject, and zoom out. If your camera doesn't give you direct control over the aperture, try using the Landscape mode.

Before going on vacation or shooting your child's wedding, experiment with these factors. Shoot things in your backyard or at a park, trying for both narrow and deep depth of field, then look at the pictures on your computer.

on Jun 23, 2011 | Digital Cameras

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Depth of field is the characteristic of how much of, or how deeply, the...


Depth of field is the characteristic of how much of, or how deeply, the photograph is in focus. If the main subject is in focus but the foreground and background are blurred, the photo is said to have a shallow depth of field. if most of the photo is in focus, including the foreground and background, the photo is said to have a wide depth of field.

Depth of field is controlled by the aperture setting:

- A wide aperture setting (indicated by a low f-stop number) will provide shallow depth of field, resulting in the main subject being in focus and the foreground and background being blurry. This setting is particularly useful when taking portraits or when using a macro lens.

- A narrow aperture setting (indicated by a higher f-stop number) will provide wider depth of field, resulting in the entire photo being in focus. This setting is particularly useful when taking landscape or wide-angle photographs.

The photographs below are examples of how the same subject will photograph using different aperture settings. Note that as the aperture closes, which will allow less light to reach the image sensor, the shutter speed gets faster to produce the appropriate exposure.



shajanrs.jpg

shajanrs_0.jpg

shajanrs_1.jpg

shajanrs_2.jpg

I think you have got a general idea about depth filed. If you have further questions, you can ask me directly. http://www.fixya.com/users/shajanrs






depth of field - what is depth field - how depth field affects picture - how to adjust depth field - DEPTH FIELD - depthfield - DEPTHFIELD

on Jan 08, 2011 | Sony Cyber-shot DSC-W50 Digital Camera

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I got a Nikon D5000 and 18-55mm lens. When I take pictures using focal between 18-24 mm the deep of field is not sharp especially for landscape pictures. I made at list 200 pictures (the same image) test...


We need to understand Depth of Field first. Depth of field increase in two ways, one with the Aperture setting and one with the distance the lens is focused on. Example, at F22 focused at 10 feet the Depth of Field will be (assume for the example) from 7ft to 20 ft. You need to use the camera in aperture mode, set it to a "Slow" aperture, the larger the number the slower the aperture. Example F2.8 is "fast or Open, F22 is slow or "closed". The problem is not in your lens or camera. To get maximum Depth of fuield you need to shoot in Aperture Mode, set the f-stop to F11 or slower, F16, F22. The use manual focus to focus the lens. Using auto focus is "ok" for many scenes but to get MAX Depth of field you cannot let the camera select the object to focus on. Here is the BEST way to do it. Setup your camera in Aperture mode, set F-stops as suggested above. Focus on the subject that you want and shoot. Dont forget, the camera will be using slow shutter speeds like this so camera shake will create blurr that can be confused with out of focus. Shooting slow at F11 to F22 usually required a good tripod. Also, another thing to know, Field of focus is deeper "behind" the spot you are focusing on than in "Frint" of the point you are focused on. Good luck, Worm1855

Dec 28, 2010 | Nikon D5000 Digital Camera

1 Answer

I do a lot of presentatins an my camera is always letting me dow. The problem is the flash doesn't always work. I put the camera on the 'P' setting. I was given the camera for a Christmas Prtesent and...


"P" is Program mode. The flash won't pop up in this mode unless you tell it to with the manual flash button.
You might be better off starting in Av (Aperture Priority) mode and choosing the depth of field you want via the aperture setting.
The camera will then pick the shutter timing according to the available light.

Choose a smaller number (=larger aperture) for less depth-of field, meaning the background will appear more blurred.

Choose a larger number (=smaller aperture) for more depth-of-field meaning the background will be more in focus.

Feb 10, 2009 | Digital Cameras

1 Answer

Set up for canon 30D EOS for intraoral pictures, to ger everything in focus.


still not sure what introral is???...but your depth of field.... ( how much of image is in focus)..is dependent on aperture setting ..the higher the number..(smaller the aperture) the more of the image will be in focus at once (front to back).... so set camera to Tv setting for aperture priority..set that number to f8 or above... f11- f16 f22 preferably and shoot away knowing you will get things in focus from close to far away

Nov 24, 2008 | Canon Digital Cameras

1 Answer

My 17-40 canon lens on a 5d body. i have ISO50 Fstop22 shutter 30sec and i a would think i can lock focus on centre or foreground and gert a sharp result but its not the case. My photos are a bit sharp...


the aperture (f/ ) is closed too much and what happens is 'diffraction'
read more about diffraction here:
http://www.luminous-landscape.com/tutorials/understanding-series/u-diffraction.shtml

good day
yitzy

Nov 18, 2008 | Canon Digital Cameras

1 Answer

Canon 400d constant backfocus


Backfocus problems will be magnified when using wide aperture lens with shallow depth of field, nice lens btw. Camera's adjustments for manual and autofocus are inside mirror cage behind mirror, and you dont want to risk getting dust on sensor or damaging sensor. Qualified camera repair shop or sending to canon for adjustment would be my suggestion.

Feb 27, 2008 | Canon EOS 400D / Rebel XTi Digital Camera

1 Answer

S4 No Multiple Focus?


Acceptable focus depends on many things and an appreciation of aperture, lens, distance and shutterspeed is needed before understanding the finer points of 'depth of field' (what will and wont be in focus). Like all cameras, an auto focus camera cannot make everything sharp, it has to focus on one thing, usually in the middle, and the rest of the picture either falls in or out of focus, depending on the combination of the above points. For example, if you shoot on a wide-angle lens with a small aperture, say anything above f8, you should have everything you want in focus. In contrast, on a longer telephoto lens with a wide aperture (more light being allowed to hit the film or chip or whatever) the resulting picture will be sharp within only a few inches of the focus point. This can be really nice if you are shooting single portraits in bright light as the background will become extremely blurry and colourful. I am presuming that the shots you are concerned with had the camera settings set to wide aperture priority, possibly because it was dull or you had a 'sport mode' selected where fast shutterspeed is needed to catch rapid movement thus a wide aperture is needed to compensate and so shallow depth of field results. I don't know the camera you are using or whether you will understand any of the above. If you need a greater explanation of what is essentially a science, please let me know.

Sep 08, 2005 | Pentax Optio S4 Digital Camera

1 Answer

Landscape picture


You don't normally want to focus on infinity for landscape shots. Auto focus on mid distance between you and infinity [horizon or most distant object] while half holding down shutter button re compose your pic and shoot. Depth of field will help to ensure that everything is in focus larger F stop more depth of field. f2.8 minimum depth of field. This is digital, film is cheap :-) Using the same focus spot, take one shot at each aperture and decide which aperture gives the desired results in terms of sharpness, I think you will find that will be around f4. Then try different focusing spot [closer or further away] to adjust how much between you and infinity is in focus depending on the results YOU wish to achieve.

Sep 06, 2005 | Panasonic Lumix DMC-FZ2 Digital Camera

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